Doorlock



June 17, 1930. c. D. SARKISIAN 1,764,807

DOORLOCK Filed April 13 1928 2 Sheets-Sheet l Inventor wpmm Attarngy Patented June 1 7, I 195% Lia se? CARAPIET avin sAnKIsrAn, or oronanwannz, MEXICO noorvLocK' I Application filed April 13,

i The present invention relates to door locks and has for its principal object to" provide a slidably mounted locking bolt arranged for securing the door in closed.

position and adapted for releasing actuation by means of a key insertable through the door from the outside thereof and provided with means controllable fromthe in side of the door for preventing the actua-' tion of the bolt by said means.

The invention further includesthe pro-,

vision of a door locking bolt adapted for releasing movementby a key operable from y the outside of the door of special construction so that any ordinary key may not be employed for the opening movement of said bolt. 7

A still further object is to provide a device of this character of a simple and practical construction, in which the bolt may be secured in locking position to avoid any possibility of the door being forced open by an unauthorized person, which is relative ly inexpensive to manufacture and install 111 operative position, and otherwise well. adapted for the purposes for which it is intended.

Other objects and advantages reside in the special construction and combination of the various elements forming the invention, reference being had to the accompanying drawings, wherein a Figure 1 is a view in elevation of the lock casing taken from the outside thereof,

looking bolt in outwardly Figure 2 is a similar View showing the iii-- cured suitable guides 10 extending upward V nally in said openin 192i 'Serial No. 269,844.

Figure 7 is a perspective viewof the bolt..

I Referring now to the drawings in detail, the invention comprises a lock casing 5 secured in any suitable manner 'to'a door or, otherclosure device withthe opposite sides of the casing disposed respectively at the inner and outer faces of-the door; 1

In the outer sideof the casing is formed a key-hole opening 6 about which is ar-' ranged an escutcheon plate 7 which. may be of any desirable style or shape whereby "to provide an ornamental appearance about the keyhole opening. V v I Vithin the lower portion of the casing is arranged a supporting block 8 upon which a bolt 9 is slidably carried with'o'ne, end thereof adapted for movementoutwardly of one'end of the casing.

To one side of the block 8 are also se ly from the block formaintainiilg the bolt in proper alignment for guiding the same through the opening in .thesidethereof.

The bolt is provided with a longitudinally extending slotted opening 11 withinwhielr is arranged apin-JJeirtendinglongitudig and having one end secured to the inner face of the casing, as by means of a screw 18 or thelilre audits oppositeend slidably inserted in a bore 13 extending inwardly of the body of the bolt from one end ofthe slotted, opening 11 and in longitudinal alignment with the pin A coiled spring is arranged-on the pin 12 with one end abutting the end of the slotted openirigll adjacent thebore 13 and Y its opposite endyabutting the enlarged end 15 of said pin. a f

Thespring'l is held under suitable pres sure between the endof the opening 11 and vthe enlargedendof the pin wherebyto noroutwardly with respect the bolt 9 is attached a key engaging plate 18 and comprising a pair of spaced parallel plate members 19 and 20. The plate 19 is disposed nearest the keyhole opening 6 with its edges unbroken and the'plate 20 is disposed immediately rearward thereof and is formed with a notch 21.

The plates 19 and 20 are disposed in offset relation from a vertical plane with the stud 16, when the bolt 9 is arranged in either its inner or outer position, as clearly shown in Figures 3 and 4 of the drawing, one edge of the inner end 22 of the key being adapted for insertion in the notched portion 21 of the plate 20 so as to provide for the actuation of the bolt upon the turning of the key in a proper manner.

The upper end of the bolt 9 is also formed with a notch 23 arranged adjacent the plates 18 and 19 and adapted to receive the offset outer end 24 of said key to further aid in the sliding movement of the bolt upon the turning of said key.

, The upper edge of the inner end. of the bolt is also formed with a pair of notches indicated at 24 and 25 respectively, said notches being separated by a partition 26 having a beveled upper surface as clearly illustrated in Figure 4 of the drawing. It will be noted that the beveled upper surface of the partition 26 is inclined upwardly in a direction toward the outer end of the bolt so as to provide an abrupt shoulder 27 at the rear end of the notch 25. 1

The notches 24and 25 are adapted to receive one end of a pivotally mounted detent 28 arranged withinv the casing and has its opposite ends disposed at right angles and extending through an .arcuate slotted opening 29 formed in the inner side casing 5. The end of the detent arranged in said arcuate slotted opening-constitutes a handle 30 for actuating the detent whereby to release the opposite end thereof from either of the notched openings 24 or 25. I

The inner end of the detent 28 is engaged by a leaf spring 31 for yieldably urging the same against the inward movement of the bolt and thus force the detent into its innermost position. 1

As clearly illustrated in Figures 3v and 4 of the drawings the inner end of the detent 28 is disposed in the notch 24 when the bolt 9 is extended outwardly of the casing and is disposed in the notch 25 when said bolt is to be held inwardly.

The inner side of the casing 5 is formed with a horizontally disposed slotted opening 32 through which a lug 33 extends, said lug being formed upon the bolt 9. A retaining latch 34 is pivotally mounted at one end upon the inner side of the casing 5 with its opposite end adapted for swinging into position for engaging the'lug 33 and retaining the same against movement with the bolt 9 arranged in an outwardly extended position. Thus upon the movement of the latch member 34 into engagement with'the lug it will. be seen that the bolt 9 is incapable of inward movement so as to allow the door to open. A retaining spring 35 is carried on the inner side of the casing for engaging the latch member 34 whereby to retain the same in upward disengaged position with respect to the bolt 33.

In the Operation of the device, with the latch member 34 disengaged from the lug 33 and the door arranged in closed position the bolt 9 may be released by the insertion and operation of the key 17 so as to slide the bolt inwardly and permit the opening of the door.

It will be seen from an inspection of Figures 3 and 4 of the drawing that the inward movement of the bolt by the actuation thereof through the key will move the detent 28 from the notch 24 into the notch 25 so that the detent.will retain the bolt in its innermost position.

In order to permit the locking of the door from the inside the handle 30 of the detent is moved in the slotted opening 29 so as to release the same from the notch 25 whereupon the spring 14 will throw the bolt outwardly into door locking position. The bolt may then be secured in such position against actuation by the key by moving the latch member 34 into engagement with the lock 33. I

In order to lock the door from the outside, the latch member 34 is first released from the bolt 33'thus permitting the bolt 9 to move inwardly upon the closing of the door it being observed from an inspection of Figure 4 of the drawing that the bolt moves inwardly upon such closing movement to such an extent as to cause the detent 28 to ride upon the beveled upper surface of the partition 26 and will not move the bolt sufficiently to enable the detent to fall into the notch 25. Consequently as-soon as the door has been fully closed the spring 14 will throw the bolt outwardly so as to secure the door in closed position and returning the detent 28 to the notch 24.

Itis obvious that the invention is susceptible to various changes and modifications without departing from the spirit or scope of the invention as Y hereinafter claimed, and I accordingly claim all such forms of the device to which I am entitled.

I claim .1. A door fastener comprising a casing attachable to the door, a bolt slidably arranged therein, spring means normally urging the bolt outwardly of the easing into door securing position and key engaging means carried by the bolt adapted upon the actuating of the key for moving the same into door releasing position and comprising a plate protruding upwardly from the bolt and having a notched upper edge with the vside walls of the notch inclined toward the adjacent ends of the bolts whereby'to receive a tang formed on the key and main taining the same in position within the notch during the sliding movement of the plate through the turning movement of the key in a predetermined direction.

2. A door lock comprising a casing "attachable to the door, a bolt slidably arranged therein, said bolt having a longitudinal groove and a recess'formed in one edge, a partition between the groove and recess with its sides adjacent the groove inclined upwardly toward the recess, spring means normally urging the bolt outwardly of the easing into door securing position, key engaging means carried by the bolt adapted upon the actuation of'the key for moving the same into door releasing position, means operable from the inside of the door for securing said bolt in either a door securing or door releasing position, said 5 means comprising a detent pivotally carried by the casing with its inner end adapted to ride along said groove and a handle formed on its outer'end adapted for moving the same out of engagement, said inner end of the detent being adapted to freely ride along the groove during the movement of the bolt into and out of door securing position, and also adapted to ride over said inclined side of the partition into the recess for securing the bolt against movement when moved beyond its door releasing position.

In. testimony whereof I aifix my signature. CARAPIET DAVID 'SARKISIAN. 4O 

